protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button = (Button) findViewById(R.id.button); button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub // ProgressDialog.show(MainActivity.this, "提示", "正在加载,请稍后..."); ProgressDialog dialog = new ProgressDialog(MainActivity.this); dialog.setTitle("提示"); dialog.setMessage("正在加载,请稍后..."); dialog.show(); } }); }